Numerical Simulations of Dynamic Pipeline-Vessel Response on a Deepwater S-Laying Vessel

Zan, Yingfei; Yuan, Lihao; Huang, Kuo Chan; Ding, Songlin; Wu, Zhaohui

doi:10.3390/pr6120261

Cited by 10 publications

(7 citation statements)

References 21 publications

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“…Hong et al [17] analyzed the feature of lifting deformation for a pipeline laid on a sleeper and studied nine influential factors of the variation in the lifting displacement. Zan et al [18] proposed a coupled time-domain numerical model for the behavior study of pipeline laying. The model was solved by the Newmark method and verified with OrcaFlex software.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of Pipeline Lifting Operations for Different Current Velocities and Wave Heights

Zhang¹,

Zhao²,

Zhu³

2023

Fluid Dynamics &Amp; Materials Processing

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Pipelines are widely used for transporting oil resources in the context of offshore oil exploitation. The pipeline stress-strength analysis is an important stage in related design and ensuing construction techniques. In this study, assuming representative work environment parameters, pipeline lifting operations are investigated numerically. More specifically, a time-domain coupled dynamic analysis method is used to conduct a hydrodynamic analysis under different current velocities and wave heights. The results show that proper operation requires the lifting points are reasonably set in combination with the length of the pipeline and the position of the lifting device on the construction ship. The impact of waves on the pipeline is limited, however lifting operations under strong wind and waves should be avoided as far as possible.

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Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of Pipeline Lifting Operations for Different Current Velocities and Wave Heights

Zhang¹,

Zhao²,

Zhu³

2023

Fluid Dynamics &Amp; Materials Processing

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“…This arrangement allows for easier monitoring, precise positioning, and less tension on the pipeline [2]. However, J-type laying exhibits lower speed and efficiency than S-type applying, with the latter being more stable [3]. Nevertheless, considering the structural characteristics of large-diameter chilled water pipes and the imposed restrictions on their maximum bending radius during installation and laying, foreign scholars have introduced a novel method: the Float and Sink Method [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Laying Depth and Pipe Arc Length on the Mechanical Performance of Large-Diameter Cold-Water Pipes during Float-and-Sink Installation

Wang

Zheng

Zhang

et al. 2023

JMSE

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The successful operation of a large-diameter cold water pipeline installation is crucial for harnessing the potential of ocean thermal energy conversion. However, there is a shortage of research focused on mechanical performance analysis during installation. This study establishes a pipeline response analysis model based on a nonlinear beam theory to elucidate the underlying mechanical behaviour. Employing the method of singular perturbation, the general solution for the exterior region of the pipeline, the solution at the boundary layer, and the valid solution across the entire domain are derived. A comparison with numerical solutions is conducted to validate the accuracy and effectiveness of the theoretical model. Based on the theoretical analysis, the influence of installation depth and pipeline curvature on the pipeline’s shape, tension, curvature, and stress is discussed. The results indicate that increasing the installation depth leads to intensified pipeline bending and significant deformation, reaching a maximum bending moment of 3.92 MN∙m at a distance of 50~100 m from the bottom of the pipeline. The results also show that, as the pipeline’s arc length increases from 0 to 100 m, the bending curvature, Von Mises stress, and bending stress exhibit a trend of initial growth followed by a decline, peaking at 7.45 MPa, and 6.83 Mpa, respectively, while the actual tension and axial tension decrease initially and then increase, reaching −0.17 MN and −0.17 MPa, respectively, at the maximum arc length. The findings of this study provide valuable insights for practical cold-water pipe installation and laying.

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“…Hui Liang [15] established a fine finite element model considering the complex surface contact behavior of the curve section under the framework of ABAQUS. Zan [16] proposed a coupled time-domain numerical model to study the influence of coupled dynamic response. The coupling model considers the motion of the pipe-laying ship, surface wave, ocean current, wind force, pipeline dynamics, and the contact between the roller and the pipeline.…”

Section: Introductionmentioning

confidence: 99%

Scaled Model Simulation and Experimental Verification of Submarine Flexible Pipeline Laying System

et al. 2021

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In order to adapt to the complex and changeable marine environment such as wind, wave, and current, the physical simulation experiment is usually needed in the design of a deep-sea flexible pipeline-laying system. In reality, the flexible pipeline-laying system is very large, and the experimental cost is huge. Therefore, when analyzing this system, it is necessary to carry out scaled model experiments to verify the rationality of it. Taking the flexible pipeline-laying system working under four-level sea conditions as an example, this paper deduces the similarity criteria of the scaled model according to the similarity theory. According to the required experimental site, the sizes and materials of the model are selected, and then the physical quantities of the model and their similarity ratio corresponding to the prototype are determined. According to the physical quantities of the experimental model, the similarity of dynamic characteristics and structural strength between the model and the prototype are verified by Adams and ANSYS Workbench. The research shows that the scaled model and prototype based on similarity theory can meet the established similarity relationship, and the scaled model experiment is an effective way to verify the rationality of the design of a flexible pipeline-laying system.

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Numerical Simulations of Dynamic Pipeline-Vessel Response on a Deepwater S-Laying Vessel

Cited by 10 publications

References 21 publications

Dynamic Analysis of Pipeline Lifting Operations for Different Current Velocities and Wave Heights

Dynamic Analysis of Pipeline Lifting Operations for Different Current Velocities and Wave Heights

Effects of Laying Depth and Pipe Arc Length on the Mechanical Performance of Large-Diameter Cold-Water Pipes during Float-and-Sink Installation

Scaled Model Simulation and Experimental Verification of Submarine Flexible Pipeline Laying System

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